Python Virtual Environment cheat sheet

python_virtual_environment.md

Anaconda

https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html

Most needed functions

conda env list
conda create --name myenv python=3.6.9
conda activate myenv
conda info --envs
conda deactivate
conda config --set changeps1 false
conda remove --name myenv --all

Environment file

https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html#creating-an-environment-file-manually

conda env export > environment.yml
conda env export --from-history > environment_from_history.yml

Bare Python (no Anaconda)

https://docs.python.org/3/tutorial/venv.html

With bare python, the virtual environnement is stored at the same location of your project, so there is no centralized location and thus no commands to list all environments created on a machine.

The environment must be activated in each terminal used.

Most needed functions

cd ./dir_to_store_the_env_that_is_where_your_project_will_be_stored
python3 -m venv myenv
source myenv/bin/activate